# US 11,452,010 B2 · Methods, systems, and devices for call session management via dynamic control of dual connectivity in a network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,010 B2 - Document ID: US11452010B2 - Status: Granted - Kind: B2 - Application number: 17/095,566 - Filed: 2020-11-11 - Published: 2022-05-12 - Granted: 2022-09-20 - Earliest claimed: 2020-11-11 - Assignees: AT&T Intellectual Property I, L.P.; AT&T Technical Services Company, Inc. - Applicants: AT&T Intellectual Property I, L.P.; AT&T Technical Services Company, Inc. - Inventors: Daniel Vivanco; David Ross Beppler; Slawomir Mikolaj Stawiarski - Web page: https://patentgrep.com/patent/US11452010B2 ## CPC - H04W 36/38: by fixed network equipment - H04W 36/00226: {wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]} - H04W 36/302: {due to low signal strength} - H04W 36/00698: {using different RATs} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects of the subject disclosure may include, for example, obtaining data relating to a user equipment, where the user equipment is communicatively coupled to a first network node, and where the first network node employs a first radio access technology, determining whether there is an initiation of a call session for the user equipment to be facilitated by the first network node, determining, according to the data relating to the user equipment and responsive to determining that there is an initiation of a call session, a probability that the call session will become disconnected, and controlling connectivity between the user equipment and a second network node based on the probability that the call session will become disconnected, wherein the second network node employs a second radio access technology. Other embodiments are disclosed. ## Claims ### Claim 1 A device, comprising: a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising: obtaining data relating to a user equipment, wherein the user equipment is communicatively coupled to a first network node, wherein the first network node employs a first radio access technology, and wherein the data relating to the user equipment includes information regarding a transmit (Tx) power of the user equipment relative to the first network node; determining whether there is an initiation of a call session for the user equipment to be facilitated by the first network node; determining, according to the data relating to the user equipment and responsive to determining that there is an initiation of a call session for the user equipment to be facilitated by the first network node, a probability that the call session will be interrupted, wherein the determining the probability that the call session will be interrupted is based on the Tx power of the user equipment relative to the first network node; and controlling connectivity between the user equipment and a second network node based on the probability that the call session will be interrupted, wherein the second network node employs a second radio access technology. ### Claim 2 (depends on 1) The device of claim 1, wherein the call session comprises a voice call session or a video call session. ### Claim 3 (depends on 1) The device of claim 1, wherein the data relating to the user equipment includes information regarding a Tx power of the user equipment relative to the second network node, and wherein the determining the probability that the call session will be interrupted is based on the Tx power of the user equipment relative to the second network node. ### Claim 4 (depends on 1) The device of claim 1, wherein the data relating to the user equipment includes information regarding a network resource demand of the user equipment, and wherein the determining the probability that the call session will be interrupted is based on the network resource demand of the user equipment. ### Claim 5 (depends on 1) The device of claim 1, wherein the data relating to the user equipment includes information regarding a signal strength of the first network node relative to the user equipment, and wherein the determining the probability that the call session will be interrupted is based on the signal strength of the first network node relative to the user equipment. ### Claim 6 (depends on 1) The device of claim 1, wherein the data relating to the user equipment includes information regarding a distance between the user equipment and the first network node, and wherein the determining the probability that the call session will be interrupted is based on the distance between the user equipment and the first network node. ### Claim 7 (depends on 1) The device of claim 1, wherein the determining the probability that the call session will be interrupted comprises determining that a value of an information item in the data relating to the user equipment satisfies a threshold. ### Claim 8 (depends on 1) The device of claim 1, wherein the controlling the connectivity between the user equipment and the second network node comprises one of deactivating a dual connectivity mode of a network for the user equipment, preventing establishment of the dual connectivity mode of the network for the user equipment, maintaining the dual connectivity mode of the network for the user equipment, permitting establishment of the dual connectivity mode of the network for the user equipment, or a combination thereof. ### Claim 9 (depends on 1) The device of claim 1, wherein the determining whether there is an initiation of a call session for the user equipment to be facilitated by the first network node comprises determining whether there is an initiation of a voice over Long Term Evolution (LTE) call for the user equipment. ### Claim 10 A non-transitory machine-readable storage device, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations comprising: receiving data relating to a user equipment, wherein the user equipment is communicatively coupled to a first network node, wherein the first network node employs a first radio access technology, and wherein the data relating to the user equipment includes information regarding a transmit (Tx) power of the user equipment relative to a second network node; determining that there is an ongoing call session at the user equipment facilitated by the first network node; determining, according to the data relating to the user equipment and responsive to the determining that there is an ongoing call session at the user equipment facilitated by the first network node, a probability that a quality of the ongoing call session will become impaired, wherein the determining the probability that the quality of the ongoing call session will become impaired is based on the Tx power of the user equipment relative to the second network node; and controlling connectivity between the user equipment and the second network node based on the probability that the quality of the ongoing call session will become impaired, wherein the second network node employs a second radio access technology. ### Claim 11 (depends on 10) The non-transitory machine-readable storage device of claim 10, wherein the data relating to the user equipment includes information regarding a Tx power of the user equipment relative to the first network node, and wherein the determining the probability that the quality of the ongoing call session will become impaired is based on the Tx power of the user equipment relative to the first network node. ### Claim 12 (depends on 10) The non-transitory machine-readable storage device of claim 10, wherein the ongoing call session comprises a voice call session or a video call session. ### Claim 13 (depends on 10) The non-transitory machine-readable storage device of claim 10, wherein the data relating to the user equipment includes information regarding a network resource demand of the user equipment, and wherein the determining the probability that the quality of the ongoing call session will become impaired is based on the network resource demand of the user equipment. ### Claim 14 (depends on 10) The non-transitory machine-readable storage device of claim 10, wherein the data relating to the user equipment includes information regarding a signal strength of the first network node relative to the user equipment, and wherein the determining the probability that the quality of the ongoing call session will become impaired is based on the signal strength of the first network node relative to the user equipment. ### Claim 15 (depends on 10) The non-transitory machine-readable storage device of claim 10, wherein the controlling the connectivity between the user equipment and the second network node comprises one of deactivating a dual connectivity mode of a network for the user equipment, preventing establishment of the dual connectivity mode of the network for the user equipment, maintaining the dual connectivity mode of the network for the user equipment, permitting establishment of the dual connectivity mode of the network for the user equipment, or a combination thereof. ### Claim 16 A method, comprising: obtaining, by a processing system including a processor, data relating to a user equipment, wherein the user equipment is communicatively coupled to a first network node of a network and to a second network node of the network, wherein the first network node employs a first radio access technology, wherein the second network node employs a second radio access technology, and wherein the data relating to the user equipment includes information regarding a speed of movement of the user equipment; determining, by the processing system, whether there is an initiation of a call session for the user equipment to be facilitated by the first network node; determining, by the processing system, according to the data relating to the user equipment and responsive to determining that there is an initiation of a call session for the user equipment to be facilitated by the first network node, that a probability of the call session becoming disconnected satisfies a threshold, wherein the determining that the probability of the call session becoming disconnected satisfies the threshold is based on the information regarding the speed of movement of the user equipment; and maintaining, by the processing system, connectivity between the user equipment and the second network node responsive to the determining that the probability of the call session becoming disconnected satisfies the threshold. ### Claim 17 (depends on 16) The method of claim 16, wherein the determining that the probability of the call session becoming disconnected satisfies the threshold comprises determining that the probability of the call session becoming disconnected is less than or equal to the threshold. ### Claim 18 (depends on 16) The method of claim 16, wherein the maintaining the connectivity between the user equipment and the second network node comprises maintaining a dual connectivity mode of the network for the user equipment. ### Claim 19 (depends on 16) The method of claim 16, wherein the call session comprises a voice call session or a video call session. ### Claim 20 (depends on 16) The method of claim 16, wherein the data relating to the user equipment includes information regarding a transmit (Tx) power of the user equipment relative to the first network node or the second network node, and wherein the determining that the probability of the call session becoming disconnected satisfies the threshold is based on the information regarding the Tx power of the user equipment relative to the first network node or the second network node.